package com.gaohe.interceptor;

import com.gaohe.pojo.User;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.apache.ibatis.plugin.Interceptor;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.util.Objects;


@Component
public class ProjectInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //在 controller 方法执行之前 执行的
        // 符合   true  放行
        System.out.println("preHandle...");
        User user = (User) request.getSession().getAttribute("user");
        if (Objects.nonNull(user)){
            System.out.println("用户已登录，放行...");
            return true;
        }
        response.getWriter().write("notLogin");
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("postHandle...");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("afterCompletion..");
    }
}
